Improvement in mechanical movements



4 11.11. TODD. Mechanical Movement.

Patented Nbv. 6, 1877.

ATTORNEYS.

N. PETERS. PMOYOJJTHQGRAPHER, WASHINGTON. D C.

UNITED STATES PATENT O EIoE.

ALBERT s. TODD, 0E PULTNEYVILLE, nEw YORK.

IMPROVEMENT IN MECHANICAL MOVEMENTS.

Specification forming part of Letters Patent No. 196,842, dated November6, 1877; application filed August 24, 1877.

To all whom it may concern:

' State of New York, have invented a new and Improved MechanicalMovement, of which the following is a specification:

Figure 1 is a plan view of my improved mechanical movement. Fig. 2 is aside elevation, in section, on line as w in Fig. 1.

Similar letters of reference indicate corresponding parts.

The object of my invention is to provide a motive power that may bedriven either by hand or foot, and by one or more persons, for drivingmachines, propelling boats and carriages, and for other purposes.

Referring to the drawing A is a frame, in which is journaled a shaft,l3, near each end, aratchet-wheel, O, and at its center a spur-Wheel, D.Split levers E are placed on the shaft 13, one at each end, astride theratchetwheels O. In the upper ends of these levers pawls F are pivoted,which engage the teeth of the ratchet-wheels G, and handles G arejointed to the levers above the pawls. I

The space between the two parts of the levers is widened near theirlower ends, and two crossbars, a a, extend from one side to the other.The lower cross-bar a is designed for receiving the foot, and the uppercross-bar a for receiving rods 1), that are connected with a lever, H,having two equal arms, and secured to a rocking shaft, 0, journaled inthe frame A.

A seat, I, is placed conveniently near the levers E. In the present casethey are supported by rods (1 from the frame A.

To operate the apparatus, the person occupies the seat I, and places hisfeet on the bars a of the levers E, and grasps the handles G, and movesthe levers by the action of the arms and legs.

The levers E are made to move alternately which carries, I

in opposite directions by their connection with the lever H. Thereciprocating movement thus I driven by the spur-wheel D, which engagesthe pinion L.

When more force is required than can be exerted by a single person,another set of levers, E, which are similar to the lever E, are pivotedon a rod, B, and are connected with the levers E by rods e. A seat, I,is placed near them, and they are operated in the same manner as thelevers E.

By extending the rods 0 any number of additional' levers E may beemployed, and the I power increased to any required extent.

The lever H may be dispensed with, if desired, when the limbs will berelied on to produce the alternate movement of the levers.

This apparatus is designed for driving machinery where a light powerisrequired.

The upper cross-bar A is padded for the acting or contracting of themuscles of the leg, first,'to give increased power; second, to relieve(in light form) the muscles of extension by change of action.

Having thus described my invention,-I claim as new and desire to secureby Letters Patent The pawl-levers E E, rigidly attached to ratchet-shaftB, and connected by rods with the middle-fulcrumed lever H, as shown anddescribed, to enable a single lever, E, to turn the shaft at both theforward and backward stroke.

ALBERT STREET TODD.

Witnesses: I

WM. CORNWALL, H. AUOHAMPAUGH.

